Stanchion



"W. MITCHELL.

STANCHION.

APPLICATION FILED OCT. 11. 1917.

Patented Mar. 30, 1920.

J1 Utormeg UNITED STATES PATENT OFFICE.

WILLIAM MITCHELL, or MILWAUKEE, WISCONSIN.

STAN GHION.

Specification of Letters Patent. Patented Mar. 30, 1920.

Application filed October 11, 1917. Serial No. 196,058. I

fully described and explained in the speci-.

fication and shown inv the accompanying drawing, in which Figure 1 is aview of, the stanchion ing it hung in the stall;

Fig. 2 is a slde view of the upper part of the stanchion, parts beingshown in section;

of Fig. 2;

Fig; 4

of the stanchion, parts being shown in section- 2 r 5 is a section takenon the line 5-5 ofFig.4;

Fig. 6 is a plan view of the stanchion.

In general the stanchion consists of a U- shaped fixed side bar 7 whichis made of channel iron for the sake of strength, work ability andcheapness, a movable sidebar 8.pivotally secured at its lower end to thefixed bar, means for locking the movable side bar in closed position,means for antomatically moving the movable side bar to open position onthe release of the looking means, and means for guiding themovable sidebar in its movementsto open and closed positions.

The movable side :bar 8 isalso of channel iron and the both sidebars areprovided with the usual wood lining 9 which is se-' cured to them byscrew bolts 10, the nuts of the bolts being seated within the chan nelsto prevent injury to the animal, or to the operator. r

The bar 8 to the lower portion of the bar 7 by means of a clip 11 havingears 12 to receive the pivot bolt 13 passingthrough said bar 8, flanges14 slidably engaging the sides of the bar 7, and a projection 15 adaptedto register in any of the holes 16 in bar 7, the clip. being securedtothe bar 7- by meansof'abolt 17 passing throughthe flanges 14' an bearingagainst t e lo er edge of the- Fig. 3 is a sectlon taken on the line 3-3 is a side view of the bottom'part:

is adj ustably pivotally: secured bar 7. On the withdrawal of the bolt17 the clip may be moved so as to bring the projection 15 into registerwith the proper hole. 16 to space the movable side bar at the desireddistance from the side of the fixed side bar.

The means for guiding the movable side bar 8 in its movements to openand closed position consists 'ofa channel guide member 18 to slidablyreceive the upper portion 19 .of the bar 7. This member is provided withthe usual fork 20 to engage the adj acent stall standard 21 when thestanchion is opened and also with an inwardly proshowjecting tongue 22which engagesa stop lug 22 mounted at the end and within the channel ofthe portion 19 of the bar 7 to limit the inward movement of the. movableside bar 8. The member 18 is adjustably pivotally secured to the bar 8by means of a clip 23 provided with ears 24 to receive the pivot bolt25passing through-the upper portion of the bar 8and secured to themember 18 by a bolt 26 which may be inserted in any one of the'apertures27 in the member 18 to space the upper end of the bar 8 the properdistance from the'side of the bar 7 when the stanchion is closed.

The means for locking the movable side bar in closed position comprisesa latch 28 pivotally mounted intermediate its ends upon a' bolt 28between the ears 29 of a fitting 30 secured within thehollow of theportion 19 of the bar 7. The end 31 of the latch28 is as wideas-thechannel bar 7 andis normally held down upon the top edges of'thechannel by means of a spring 32 housed at one end within the latch andbearing against the fitting 30 at the other end. The handle end 33of-the latch isprotected from manipulation bythe animal by the ears 29which extend laterally ofrthe handle. The latch 28 is adapted to engageinwardly extending tongues 34 on the member 18 which slidably move alongthe top of the bar 7 during the greater part of the movement of themember 18 to open posi- 2 tion. These tongues 34 have'inclined frontfaces 35 which engage inclined faces 36 on theend 31 of. the latch toautomatically lift.

said latch upwardly when the member 18 is moved inwardly on the closingof the side bar 8 and at the end of this movement, the

end 31 of the latch moves down behind the tongues 34 and prevents theside bar from being opened until the handl 3 1s pressed upon to raisethe latch. The outward movement of the side bar 8 is limited by thetongues 34 which engage the abutments 37 on the stop 22 when the sidebar moves to its extreme outer position.

By reason of the sliding fit between the member 18 and the bar 7 anytwisting movement of the side bar 8 upon its pivot bolt 13 is preventedand the wearing quahtles of the stanchion thereby increased. Furthermorethetongues 34 act as guides, as cooperative parts of the lock and as acooperative part of means for limiting the outward movement of themovable side bar.

The means. for automatically moving the movable side bar to openposition on the release of the locking means comprises spring 38 seatedwithin a housing 39 which is secured to the side bar by an integralpin40 engagingin a recess in the wood lining strip 9 and ears 41engaging the sides of the lower end of the side bar 8, and

tongue 41 engaging the wood lining, the

lower end of said spring .beingmountedprojection 42 integral with theher 46 carried by the frame member or top 7 bar 47 of the stall frameand the lower end of the stanchion is secured for limited movement by aclip 48 secured to the lower por- 7 tion of the bar 7 a clip 49pivotally secured to the clip 48, an eyebolt 50 having a swivelconnection with the clip 49 and suitably secured at its lower end to thestall floor.

With the construction above described when it is desired to open thestanchion the v operator presses down upon the handle 33 with one handthereby disengaging the end 31 of the latch 28 from the tongues 34 onthe member 18 and the spring 38 swings the side bar 8 out to openposition, as shown in dotted lines in Fig.1, the movement of the sidebar being limited by the tongues 34 striking the abutments 37 on thestop 22. In closing the stanchion the side bar 8 is moved inwardly by,the operator with one hand, the member 18 moving along the upper portionof the bar 7, the tongues 34 raising the latch 28 the end 31 of thelatch being automatically moved down behind the tongues when the tongue22 strikes the lug 22' and the stanchion thus locked closed.

With this. arrangement the opening and closing of the stanchion may beaccomplished by the operator releasing the look from eitherside, frontor back, of the stanchion, the stanchion being automatically quicklyopened to rel e the animal by the spring b 38 which also holds the sidebar 8 in open position against the adjacent stall upright to prevent theanimal entering 1ts head between the stall upright and the bar 8 whendriven into the stall.

What I claim as my invention is:

1. In a stanchion, the combination, w1th a U-shaped fixed bar, a clipsecured to the lower portion thereof and provided with a projection, amovable side bar pivotally secured to said clip, means for locking theside bar closed, a' housing secured to the movable side bar adjacent theclip, a spring seated in said housing and engaging said projection toautomatically move the side bar to open position on the release of saldlocking means.

i 2.- In a stanchion, the combination, with a one-piece U-shaped fixedbar, a clip secured to the lower portionthereof and provided with anupwardly extending pro ection, a stud on the under side of said. clipand adapted to selectively engage apertures in the lower portion of saidfixed bar to adjustably position the clip thereon, a movable side barpivotally secured to said clip, means for locking the side bar closed, ahousing secured to the movable side bar ad'- jacent the clip, and anextensile spring seated in said housing and engaging said projection tourge the side bar to openposi tion on the releaseof said locking means.

3. In a stanchion, the combination, with a U-shaped fixed bar, a clipadjustably secured to the lower portion thereof and provided with aprojection, a movable, side bar pivotally secured to said clip, meansfor locking the side. bar closed, a lining secured to the inner side ofthe longitudinal portion of said fixed bar and to the inner side of saidmovable bar, a housing provided with a projection. and tongue portion engaging the lower' end of the lining carried by'the movable bar to securethe housing'to the movable side bar adjacent the clip, and a sprlngseated in said housing and engaging said projection to automaticallymove the side bar to open position on the release of said locking means.r

4. In a stanchion, the combination with a one-piece U-shaped fixed bar,of a movable side bar pivotally secured thereto at its lower end, a clipmember pivotally fixed to the upper end of said movable side bar, achannel guide member adjustably secured to said clip whereby the same ispivotally secured to the upper end of the movable side bar, said channelguide member being slidably mounted upon the upper portion of the fixedbar,

fixed bar for longitudinally engaging said guide member on the movementof the side bar to closed osition, and a sto on" th fixed b p p e outerand inner movement of the movable ar. Y

a latch pivotally carried by the" ar engaging said member to limit the5. In a stanchion, the combination with a one-piece U-shaped fixed bar,a clip secured to the lower portion thereof, a movable side barpivotally secured to said clip, means cooperating with said clip and theadjacent end of said movable side bar and normally urging the bar toopen position, a clip pivotally secured to the upper end of the movableside bar, a channel guide member fixed to said clip and slidably mountedupon the upper portion of the fixed bar, means'carried by the fixed barfor releasably locking said guide member in closed position, and meansfor adjusting the first named clip on the lower portion of the fixed barand the channel guide member on the second named clip whereby themovable side bar and the longitudinal portion of said fixed bar may beadjusted with respect to each other.

6. In a stanchion, the combination with a one-piece U-shaped fixed bar,a movable side bar pivotally secured thereto at its lower end, of a clippivotally secured to the upper end of the movable side bar, a channelguide member fixed to said clip and slidably mounted on the upperportion of the fixed bar, means for releasably locking said guide memberin closed position, and means for adjusting the channel guide member onsaid clip, whereby the movable bar and the longitudinal portion of saidfixed barmay be adjusted with respect to each other.

7 Ina stanchion, the combination with a one-piece U-shaped fixed bar, of'a movable with the a )erture of said clip, said channel I guide mem erbeing slidably mounted on the upper ortion of the fixed bar, meansengageab e with the channel guide member for releasably locking the samein closed position, and means detachably engaging the registeredapertures of said channel guide member and said clip whereby the movablebar and the longitudinal portion of said fixed .bar may be adjusted withrespect to each other.

In testimony whereof, I afiix my signature.

WILLIAM MITCHELL.

